HP J4861A, Руководство по установке и началу работы

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Troubleshooting
Diagnosing with the LEDs
Diagnosing with the LEDs
Table 4-1 shows LED patterns on the switch and the switch modules that
indicate problem conditions.
1. Check in the table for the LED pattern that you see on your switch
2. Refer to the corresponding diagnostic tip on the next few pages.
Table 4-1. LED Error Indicators
LED Pattern Indicating Problems
Diagnostic
Tips
Power
Fault
Self T
e
st
Module Sta
tus
(one LED per
module)
Power Status
(one LED per
power su
pply)
Fan
Status
Port Link
Off with
power cord
plugged in
* * * * * *
➊
On Prolonged
On
Prolonged
On
* * * *
➋
On Flashing
†
Flashing
†
Off * * *
➌
On Flashing
†
Flashing
†
Flashing
†
* * Never On
➍
On Flashing
†
Flashing
†
Flashing
†
* * On briefly,
then Off
➎
On Off Off Flashing
†
* * *
➏
On Flashing
†
Flashing
†
Flashing
†
* * Flashing
†
➐
On Flashing
†
Off * Flashing
†
* *
➑
On Flashing
†
Off * * Flashing
†
*
➒
On Off Off Off * * Fast
Flashing
††
➓
On Off Off On * * Off with cable
connected
* This LED is not important for the diagnosis.
†
The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.
††
The fast flashing behavior is an on/off cycle once every 0.8 seconds, approximately
T
rou
blesh
oot
ing
4-4